2212012981 has 2 divisors, whose sum is σ = 2212012982. Its totient is φ = 2212012980.

The previous prime is 2212012969. The next prime is 2212013039. The reversal of 2212012981 is 1892102122.

2212012981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2210410225 + 1602756 = 47015^2 + 1266^2 .

It is a cyclic number.

It is not a de Polignac number, because 2212012981 - 2⁹ = 2212012469 is a prime.

It is a super-2 number, since 2×2212012981² = 9786002856225012722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2212712981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1106006490 + 1106006491.

It is an arithmetic number, because the mean of its divisors is an integer number (1106006491).

Almost surely, 2^2212012981 is an apocalyptic number.

It is an amenable number.

2212012981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2212012981 is an equidigital number, since it uses as much as digits as its factorization.

2212012981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 2212012981 is about 47032.0420670844. The cubic root of 2212012981 is about 1302.9544208407.

The spelling of 2212012981 in words is "two billion, two hundred twelve million, twelve thousand, nine hundred eighty-one".